Reply To: Validation of a field based on the value of another field

• John Huebner

• March 23, 2019 at 12:54 am

// conditionally require video field IF playlist ID field is blank
add_filter('acf/validate_value/key=field_5c7ea3fd1ff26', 'acf_validate_video', 10, 4);

function acf_validate_video( $valid, $value, $field, $input ) {
	
	// bail early if value is already invalid
	if( !$valid ) { return $valid; }
	
    //$playlistID = 'test';
    $playlistID = $_POST['acf']['field_5c8fe92190fd6'];
	
	if ( empty($playlistID) && empty($value) ) {
		if (!$value) {
			$valid = __('You must select a video if no Playlist ID is defined.');
		}
	}

	return $valid;
}